# -*- coding:utf-8  -*-

# print("请输入N的值,来确定列表的长度")
# N = input()
# li = [0 for i in range(int(N)+1)]#在列表创建时 直接声明值
# # for   i  in  range(int(N)+1):
# #     li.append(i)  #追加值
# print(li)

# str1 = '12345679'
# i = len(str1) - 1
# while  i >= 0:
#     print(str1[i],end="")
#     i = i -1
# #   1235321

# z = zip(['a','b'],(1,2,3))  #返回的值是一个元组对象
# # print(list(z))
# print(dict(z))
A1 = range(10)
A0 = dict(zip(('a','b','c','d','e'),(1,2,3,4,5)))
# b = A1
# print(b)
A2 = [i for i in A1 if i in A0]#给列表直接赋值
# i = []
# for  o in A1:
#     if o in A0:
#         i.append(o)
# print(A2)
# A3 = [A0[s] for s in A0]
# print(A3)
# # for  i  in range():
# li = [0]
# li.sort()
#
# a = {'a':10,'b':5}
# li.append('s')
# li[0] = 10
# print(li[0])
# print(li.index(50))
# def  fun1():
#     fun2()
# def fun2():
#     fun1()
#
# fun2()
def  fun3():
    return "abc"

a = fun3()
def  fun4(b):
    c = b
    print(c)
    return None
fun4(fun3())